溫泉泡湯為臺灣人常見的休閒活動，一般認為浸泡溫泉有舒緩壓力及促進健康的效果，但對於個體生理機能影響的研究並不多見。本研究目的在於探討溫泉浸泡對生理現象的影響，由40位自願者(18至30歲)分成溫泉組或溫水組(各20人)，並以不同浸泡溫度(36℃與41℃)及浸泡深度(半身－肚臍以及全身－頸部)來比較其效應。浸泡前先測一次生理參數(體溫、脈搏、收縮壓、舒張壓)，浸泡時間計15分鐘，期間每5分鐘測一次，直到浸泡結束後15分鐘，比較各浸泡方式前、中、後的變化。結果顯示全身浸泡於41℃的溫泉或溫水中，較易引起體溫、脈搏明顯增加，半身浴或36℃的溫泉或溫水則無法使體溫、脈搏明顯上升。故溫度越高、浸泡部位面積越多，對於體溫及脈搏的影響越大。浸泡期間各組皆可發現血壓明顯下降，並於浸泡結束後回復。因此本研究結論為浸泡時的水溫與深度會影響體溫、脈搏，且血壓亦有下降現象，在泡湯模式選擇與安全顧慮上可提供業者與泡湯者參考。 Hot spring had become an important leisure to Taiwanese. Most of people affirmed that the hot spring can release stress and facilitate health. But there were few researchs for the hot spring on physiological influence. The object of this study was to investigate the physiological effects of the hot spring soaking. Forty volunteers (age from 18 to 30) were assigned to two major groups: 20 volunteers soaking in the hot spring and the other 20 volunteers soaking in the warm water. Different soaking temperature (36℃ and 41℃) and depth (half body and most body) were performed to compare the effects. Physiological parameters (body temperature, heart rate, systolic blood pressure and diastolic blood pressure) were determined in an interval of 5 minutes during 15 minutes soaking time and 15 minutes recovery. One-way analysis of variance (ANOVA) was used to analyze differences before, during and after soaking as same as to compare the effects of temperature, depth between hot spring and warm water. The significant level of P value was set 0.05. The results showed that the body temperature and heart rate increased as soaking to neck (most body) in hot spring and warm water with a temperature of 41℃ but not 36℃. Both of the systolic and diastolic blood pressure decreased significantly during soaking period and recovered after the end of soaking. There was no statistical difference between hot spring and warm water, 36℃ and 41℃, half and most body. It was concluded that the body temperature, heart rate and blood pressure were influenced by the soaking mode relating with temperature and depth.